辉光放电电解等离子体引发合成丙烯酰胺-丙烯酸共聚物水凝胶及其对阳离子染料的吸附性能  

Glow-Discharge Electrolysis Plasma Induced Synthesis of P(AM-co-AA) Hydrogel and Its Adsorption Performance for Cationic Dye

作　　者：俞洁[1] 潘元沛[1] 陆泉芳[1] 杨武[1] 高锦章[1] 

机构地区：[1]西北师范大学化学化工学院甘肃省生物电化学与环境分析重点实验室,兰州730070

出　　处：《功能高分子学报》2012年第3期271-277,共7页Journal of Functional Polymers

基　　金：教育部重点科技基金(00250);甘肃省自然科学基金(3ZS041-A25-028;096RJZA120);西北师范大学青年教师科研能力提升计划(NWNU-LKQN-10-16)

摘　　要：以丙烯酰胺(AM)和丙烯酸(AA)为单体、N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,在水溶液中利用辉光放电电解等离子体(GDEP)引发,一步制得丙烯酰胺-丙烯酸共聚物(P(AM-co-AA))水凝胶。用红外光谱(FT-IR)、扫描电镜(SEM)和热重分析(TGA)对P(AM-co-AA)水凝胶的结构、形貌和稳定性进行了表征。考察了放电电压、放电时间、MBA质量含量、AM质量分数以及中和度对P(AM-co-AA)水凝胶吸附孔雀石绿(MG)的影响,同时探讨了引发机理。结果表明,水凝胶对MG的最大吸附量为864mg/g。The acrylamide-acrylic acid copolymer（P（AM-co-AA）） hydrogel was prepared in aqueous solution using glow-discharge electrolysis plasma（GDEP） induced graft copolymerization of acrylamide（AM） and acrylic acid（AA）,in which N,N′-methylenebisacrylamide（MBA） was used as crosslinker.The structure of P（AM-co-AA） hydrogel was characterized by Fourier transform infrared spectroscopy（FT-IR）,scanning electron microscopy（SEM）,and thermogravimetric analysis（TGA）.To optimize the synthesis conditions,discharge voltage,discharge time,mass fraction of AM and crosslinker,and degree of neutralization were examined in detail for adsorption of malachite green（MG）.The induced mechanism of GDEP was also discussed.Results showed that the maximum adsorption capacity of P（AM-co-AA） hydrogel for MG was 864 mg/g.

关 键 词：辉光放电电解等离子体 丙烯酰胺-丙烯酸共聚物 水凝胶 吸附 孔雀石绿 

分 类 号：O631[理学—高分子化学] O647.3[理学—化学]